Born and raised in Fort McMurray, Alta., Corey Coffey has seen the community go through ups and downs.

From the 2016 wildfire to flooding to economic downturns, the northern Alberta community has persisted.

But the looming threat of U.S. tariffs has him nervous.

"This feels a lot different," said Coffey, who has worked in the oilsands since he was a teenager, 

Coffey, the CEO and owner of GOAT Mechanical Services, a heavy equipment repair company, said it has been a "rollercoaster" as tariff threat…